Superheater-header.



J. PRIMRSE. SUPERHEATER EBADE APPLxcA'rloN FILED un 2a, 1914 Patented Feb. 23, 1915.

3 SHEETS- SHEET 2 Wl TNE SSE S J. PBIMROSE. SUPERHEATER HEADER. APPLIGAMUN FILED MAY 26,1914

Patented Feb. 23, 1915,

3 SEBETSA-SHEET 3y WTNESSES:

UNTED STATES lATENT OFFICE.

JOHN PBIMROSE, 0F NEW YORK, N. Y., ASSIGNR TO POWER. SPECIALTY COMPNY, A OORPGRATIGN 0F NEW YORK.

SUPERHEATER-HEAER.

Speccation of Letters Ptent.

Patented Feb. 23, 1915.

To all whom it may concern:

lle it known that I. JonN Pmnnosn, a subject of the King of Great Britain. residing;I at New York. in the county and State of New York. have invented certain new and useful vl'mnrovements in Superheater- Headers. of which the following is a full, clear, and exact description.

The invention which constitutes the suhiect-matter ot' this apolication relates to an improvement in sunerheatersand has to do particularly with the tvpe of sunerheater in 'which the individual units or elements are nroiccted rearwardlyfrom the smakeloos, in which the suncrheater is located, into the fire tubes of a locomotive or other hoiler.

The invention resides more partichlarly in the form of header used. one of the more imnortant features consisting in the provision ot an enlargement at the central non tions of the saturated and sunenheated steam chamhers. so that the drV-nipe 'muv be rcmoved from the locomotive througrh said enlargement While usingr the chambers ot medium sire and without disturbing the position oi the superheater.

In the drawings. Figure l is a longitn dinal section of mv device on the line rz-h of Fig. il. illustratinglr the manner in which the sunerheater is connected to the tube sheet of the boiler. and its relation to the drv-pine and tire-tuhes of said hoiler. Fig. 2 is a front View of the sunerheater parts thereof being in section. Fig. 3 is a top plan View of the header. with the enlargement shown in central longitudinal section. Fig. 4 is a section of one of the header chamhers taken on the line e-f of Fig. 3. Fig'. 5 is a View in nersnective showing! the various narts of the header before they have been assembled and Welded.

Referring to the drawing in detail` the reference numeral 10 designates the forward portion of a locomotive or stationarv boiler, nrovided with the usual lire tubes 11. smoke box 1Q. tube sheet 13. and drv pine. 14. The sunerheater comprises a-saturated steam chamber 15, the suoerheated steam chamber 16, the enlargement 17 constituting a nart of the header and to which the chambers are independently welded or otherwise secured` and the superheating element or units 33, which project rearwardly into the fire tubes 1l and the inlet and outlet ends of which are expanded respectively into the inlet and outlet chambers l5 and 1G.

The saturated and superheated steam compartments 1S and 19 are formed bv weldinev or the otherwise securing together of 'the chambers 15 and 1G to the cylindrical 60 enlargement 17. The manner in which these parts are constructed is clearly illustrated in Figs. 3, and The enlargement 17 is provided with two onenings rf, b, through the side thereof which preferably corre G5 :wond in shane and size to the shape and size of the openings o', b' in the chambers 15 and In the embodiment shown these openings are both substantially rectangular and scmieircular in shape.

The. cvlindrical enlargement is provided with continuous annular flanges 20, `21, for direct connection with the dry-pipe, and to provide a securing means for the closure 9.2. Tin, enlargement is also provided with an internal annular flange Q3, and this flange, in coniunction with the elosuro` divides the enlargement into two separate chambers Q5, QC, which constitute parts of the compartments 1S and 19, respectively. The 80 header therefore commises an enlargement provided with a partition dividing: the sume into saturated and super-heated steam chambers. in combination with saturated and superheated steam chambers Welded or otherwise .secured to said enlargement. the last mentioned saturated steam chambers in eonjunction with said saturated steam chamber ot said enlargement constituting` the saturated steam compartment of the superheater,y and the last mentioned steam chamber in coniunction with the superheated steam chamber of said enlargement constituting: the. superheated steam compartment of the sunerheater.

From the construction above described, it will be seen that I hare devised-a superheater in which the chambers are of normal size` cach 'independently welded or other- 'ise connected to the enlargement, and in 100 which provision `is made for withdrawing the dry-pipe through the latter for replacement or repairs. It is only necessary to remoiu the closures 2Q and Q4 in order to do this, which allords ready access to the said dry-pipe. Consequently I obtain not only all the advantages secured by the drum, but others in addition, as will be apparent. It is of course understood that there is quite a dill'erence in temperature between the saturated steam in the inlet chamber an the superheated steam in, the oul'l it chamber. The feature therefore of havin the chambers independently connected allows each to expand and freely accommodate itself to its own temperature. Of course rovision is made in the Way of hand-holes 2 for affording access to the ends of the superheatin units, whereby the same may be ex ande into place or removed from the hea ers, as desired.

Another feature of this invention consists in providing supports 2B for the superheating units,.which take up all strain upon the superheaters whenever, for any reason, the locomotive comes to u sudden op, or is otherwise jarred. These supnorts '28 are mounted upon suitable brackets Q9, located upon the interior 'wall of the smoke-box, and are further provided with screw-threaded bolts, welded or otherwise secured thereto, andr projecting in u longitudinal direction with respect 'to the moltebox. These bolts, or rather screw-,threaded rojections, are adapted to enfer petfinald` liigs welded or otherwise secured tethere-` turn bands of the superheater units, and it will he seen that a rigid connection is secured whenever the nuts 31 are in place. It is necessary to have the bolts proiecting from the supports 28 longitudinally arranged, for convenience in placinthe'nuts 31 thereon.

The headers may be supported either by the tube sheet or by the brackets 32, or by both. as desired.

lVhat I claim is:

1.V A super-heater comprising saturated and superheated steam chambers. a drypipe, and an enlargement to which said chambers are Welded or otherwise' secured and through which the dry pipe of the locomotive may be passed, and superhenting units expanded into said chambers.

2. A superheater comprising a substantially cylindrical or drum-shaped portion to which the dry-pipe is connected and through which it maybe removedQsaid portion having a partition thcreindi-viding the same into separate chambe' :l in combination With chambers welded to said drum-shaped portion and in dircctcommunication with the chambers of the latter, the said' chambers constituting the saturated and sulpe'rheatcd steam compartments of said superheater,

.and superhcaterr units expanded into said chambers.

3 A supcrheater comprising an enlarged portion to which the dry-pipe is connected and through which it may be removed, in combination with saturated and superheated steam chambers welded or otherwise secured to said portion independentlyv of each other whereby each accommcdates itself to its own temperature, and superheater units expanded into said chambers.

4.. A superheater comprising a substantialiy cylindrical or drum shaped enlargement to which the dry-pipe is connected and through which it is adapted to be removed, said enlargement having a partition vtherein dividing the same into separate chambers, in combination with saturated and superheated steam chambers welded or otherwise secured to said enlargement and in direct communication with the chambers of the latter, said saturated and superheated steam chambers connected to said enlargement independently 'f each other whereby each accommodates itself to its own temperature und super-heater units expanded into said chambelii. l i i `5. In combinaltonfwith a boiler, of a suprh'eater, comprising a header located in the smoke-box, and superheater units having erfahre-ted lugs andprojecting rearwardly to o surality of lire tubes, the ends of said tl'nits ingl expanded into.said header, in combination with means for rigidly anchoring said units, comprising cross bars secured to the interior of the smoke-box and provided with V projecting bolts thereon, and means'tfor securing the said bolts to the said luga. i

6. In combination with a boiler, a superheater comprisin a transverse or extension header located in and supported by the walls of the smoke box, and superheater units havin perforated lugs and projecting rearwardly into a plurality of lire tubes, the ends of said units being expanded into said header, in combination with means for rigidly anchoring said units comprising a plura lity of crossbars secured to the interior of said smoke box and each provided with a plurality of 'bolts arranged substantially parallel to the longitudinal axis of said boiler, and means for securing said bolts to said lugs.

7. A header for a superhealer comprising an enlargement to which the dry-pipe is adapted to be connected and through which it may be removed. said enlargement provided with a partition dividing the same into saturated and superheated steam charnbers, in combination with saturated and superheated steam chambers welded or otherwise secured to said enlargement, the last mentioned satur'atcd steam chamber in conjunction with said saturated steam chamber of said enlargement constituting the snturted steam compartment of the superheater, and the last mentioned superhented steam chamber in conjunction with the superheatcd steam chamber of said enlargement constitutingfthe superheuted steam compartment of the superhezlter.

Intes-timony whereof I ax my signature in the presence of two subscribing witnesses.

JOHN PRIMROSE.

Vitnesses:

TuoMAs J. BYRN, JOHN B. MCGUmE.

Disclaimer in Letters Patent No. l,l 29,'l22.

DIS CLAIMER- New York, N. Y. SUPEanEATEn-HEADER. Patent 1916, by the assignee,

1,129,122.J0m Primrose,

datfvLFebruary 23; 1'915. Disclaimer filed April 7, Power Specialty Company, New York-,N Y. Enters this diselaimerl "To that-part of the description on page 2 of the pat-cnt which is lines. 22 to 43, both inclusive, and to claims 5 and 6, which are in the following words, to wit:

heating units, which take up all strain upon the superhcaters whenever, for any reason, the locomotive comes to n sudden stop, or is otherwise jrured. 'llxese support-s 28 are mounted u on suitable brackets 29, located u on thc interior wall of the `smoke-box, and are filrther provided with screw-threadet bolts, welded or otherwise secured thereto, and projecting in a longitudinal direction with respect to the smoke-box. These bolts, or rather screw-threaded projections,iare adapted to en ter perfirated lugs` welded or otherwise secured to the return bends of the superheater units, and it will be seen that a rigid connection is secured whenever the nuts 31 are in place. It is nece sary to have the boltsl projecting from the supports 28 longitudinally arranged, for convenience in placing the nuts 31 thereon.

"5. In combination with a t in the smoke-box, and su erlwaler units having perforated lugs and projecting rearwmdly into n plurality o fire tubes, the ends' of said unit-s beingexpandcd into said header, in combination with means. for rigidly anchoring said units, comprising cross bars secured to the interior of the smoke-box and provided with projecting bolts thereon, and means for securing the said bolts to the said lugs.

l "6. .In combination with a. boiler, a superheater comprising a transverse or extension Leader located in and supported by the walls of the smoke box, and superheater units havingpcrforated lugs andprojecting rearwardly into a plurality of fire tubes, the ends of said units` being expanded into said he ader. in oombinnlimi with means for rigidly anchoring said units comprising a plurality ol cross-bars sccured to thcinterior of said smoke box and eat-h provided with :l plumlity of bolts arranged substantially parallel to the longitudinal axis o.' said boiler, and means for securing seid bolts to s tid lugs."

t [Qyipial Gazette, April 16', 1.916.]

"Another feature of this invention consists'in providing supports 28 for the super-A boiler, of :x super-heater, comprising a header located 

